function as or act like;
"This heap of stones will act as a barrier"
pretend to have certain qualities or state of mind;
"He acted the idiot"
"She plays deaf when the news are bad"
- I accepted the appointment as chairman.
- You are going to act as our sole agent in Brazil.
- The table used to do duty as a hotel desk.
- Act as part of the operating system.
- act as host 做东